Source : Webster's Revised Unabridged Dictionary (1913)

Chess \Chess\, n. (Bot.)
   A species of brome grass ({Bromus secalinus}) which is a
   troublesome weed in wheat fields, and is often erroneously
   regarded as degenerate or changed wheat; it bears a very
   slight resemblance to oats, and if reaped and ground up with
   wheat, so as to be used for food, is said to produce narcotic
   effects; -- called also {cheat} and {Willard's bromus}. [U.
   S.]

   Note: Other species of brome grass are called upright chess,
         soft chess, etc.

Bunch grass, grazing. Far West. {Eriocoma}, {Festuca}, {Stips},
etc. Chess, or Cheat, a weed. {Bromus secalinus}, etc. Couch
grass. Same as {Quick grass} (below). Crab grass,
      (a) Hay, in South. A weed, in North. {Panicum sanguinale}.
      (b) Pasture and hay. South. {Eleusine Indica}. Darnel
      (a) Bearded, a noxious weed. {Lolium temulentum}.
      (b) Common. Same as {Rye grass} (below). Drop seed, fair
          for forage and hay. {Muhlenbergia}, several species.
          English grass. Same as Redtop (below). Fowl meadow
          grass.
      (a) Pasture and hay. {Poa serotina}.
      (b) Hay, on moist land. {Gryceria nervata}. Gama grass,
          cut fodder. South. {Tripsacum dactyloides}.

Source : WordNet®

Bromus secalinus
     n : weedy annual native to Europe but widely distributed as a
         weed especially in wheat [syn: {chess}, {cheat}]